JP4802713B2 - Elevator failure detection device and method for repairing elevator device - Google Patents

Description

  The present invention relates to a failure detection device for detecting an operation failure of a safety device provided at the tip of an elevator car door, and an elevator device for adding a failure detection function for detecting an operation failure of the safety device to an existing elevator device. It is related to the repair method.

  The car door that opens and closes the car doorway formed in the elevator car detects that an obstacle such as an elevator user or user's baggage has come into contact with the tip of the car door that is being closed. A safety device is provided that reverses the car door and the landing door before the user or the like is completely caught by the car door. In such a safety device, for example, safety shoes are provided over and under the landing side surface of the car door so that a part thereof protrudes from the tip of the car door. There has been known one that reverses a car door and a landing door by detecting the amount of movement of a safety shoe by a shoe switch when it has moved a predetermined distance in the opening direction.

  By the way, when an operation failure occurs in the shoe switch, for example, even when no obstacle is in contact with the safety shoe, the movement of the safety shoe is detected and the reversing operation of the car door and the landing door is repeated. Something can happen. As a prior art of such a failure detection device for detecting an operation failure of the safety device, the first detection means for detecting the door closing command of the car door issued from the elevator control means and the door open button are not pressed A second detecting means for detecting the door, a third detecting means for detecting the door fully open state, and a fourth detecting means for detecting that the contact point of the shoe switch for detecting the movement amount of the safety shoe is open. It has been proposed that when all of the first to fourth detection means are ON, it is determined that the safety device has malfunctioned (see, for example, Patent Document 1).

JP-A-5-193879

  In the elevator failure detection device described in Patent Document 1, when the shoe switch is in an ON failure, that is, the inner contact of the shoe switch remains open and no obstacle is in contact with the safety shoe. Regardless, when the safety switch detects that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door, it is determined that the safety device is abnormal. However, in the above failure detection device, when the shoe switch is in an OFF failure, i.e., the shoe switch is in a closed state, the safety shoe moves a predetermined distance in the door opening direction with respect to the car door. However, when the movement of the safety shoe was not detected by the shoe switch, it was not possible to determine that the safety device was abnormal. In the event of a shoe switch OFF failure, the car door and the landing door will not be closed due to repeated reversing action, but the function of the safety device cannot be fulfilled, and the user etc. Even if the shoe is touched, a situation may occur in which the user is caught by the car door until another safety device or the like operates.

  Some recent elevator apparatuses have a function of monitoring a load state acting on a car door during a door opening / closing operation and inverting the door opening / closing operation when an overload state is detected. In an elevator apparatus having such a function, it is possible to detect an ON / OFF state of the shoe switch (internal contact open / closed state) upon detection of an overload state, and to determine the shoe switch OFF failure. In an old elevator apparatus that is not equipped with the above, there has been a problem that it is impossible to detect an OFF failure of the shoe switch. Therefore, in order to detect an OFF failure of the shoe switch in the old elevator device, an expensive device capable of detecting the OFF failure described above cannot be added to an existing elevator device, or a new device cannot be added. In some cases, it has become necessary for maintenance workers to manually diagnose OFF failures during maintenance inspections.

  The present invention has been made to solve the above-described problems, and its object is to be able to cope with various elevator apparatuses and to detect an OFF failure of a shoe switch reliably and inexpensively. An elevator failure detection apparatus and an elevator apparatus repair method are provided.

  The elevator failure detection device according to the present invention includes a car door provided in an elevator car, a door closing detection device that detects that the car door has reached a predetermined door closing position, and a door opening / closing direction of the car door. A safety shoe provided at the tip of the car door so as to be able to move forward and backward, and a shoe operation detecting device provided at the car door, which detects that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door. The safety shoe is provided on the safety shoe, and when the door closing operation of the car door is finished, the shoe operating means for moving the safety shoe to the detection position of the shoe motion detecting device, and the detection result of the door closing detecting device and the shoe motion detecting device. And a determination means for determining an operation failure of the shoe motion detection device, the shoe motion means is provided on the safety shoe, and opens and closes the car door. The mounting portion formed with a screw hole in the direction and the door stop portion of the car are arranged opposite to each other, and the screw portion is screwed into the screw hole of the mounting portion, so that the protruding amount from the tip of the safety shoe is reduced. And an adjustable protrusion.

  A method for repairing an elevator apparatus according to the present invention includes a car door provided in an elevator car, a safety shoe provided at a front end portion of the car door so as to be movable forward and backward in a door opening / closing direction of the car door, and a car door And a shoe motion detecting device that detects that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door. In order to move the shoe to the detection position of the shoe motion detection device, the mounting portion formed with a screw hole in the door opening / closing direction of the car door and the door contact portion of the car are arranged, and the screw portion is a screw of the mounting portion. A shoe operating means is provided on the safety shoe that has a protruding portion whose amount of protrusion from the tip of the safety shoe is adjustable by being screwed into the hole. Based on the detection result of the door closing detecting device and the shoe operation detecting device for detecting that reaches the door-closing position, and adds the determination unit that the operation failure of the shoe operation detecting apparatus.

  The present invention includes a car door provided in an elevator car, a door closing detection device that detects that the car door has reached a predetermined door closing position, and a car that can be moved forward and backward in the door opening / closing direction of the car door. A safety shoe provided at the front end of the door, a shoe motion detection device provided on the car door, and detecting that the safety shoe has moved a predetermined distance in the door opening direction relative to the car door; and the safety shoe. When the door closing operation of the car door ends, the shoe operation means for moving the safety shoe to the detection position of the shoe operation detecting device, and the shoe operation detecting device based on the detection results of the door closing detecting device and the shoe operation detecting device. A determination means for determining an operation failure of the vehicle, and the shoe operation means is provided on the safety shoe and has a screw hole formed in a door opening / closing direction of the car door A projecting portion that is disposed to face the door-to-door portion of the car and that has a screw portion that is screwed into a screw hole of the mounting portion so that the amount of protrusion from the tip portion of the safety shoe is adjustable. As a result, it is possible to cope with various elevator apparatuses, and it is possible to detect an OFF failure of the shoe switch reliably and inexpensively.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a front view of an elevator failure detection apparatus according to Embodiment 1 of the present invention, and shows a state in which a part of a car moving up and down in an elevator hoistway is viewed from a landing side. In FIG. 1, a car doorway 1 formed in a car that moves up and down in an elevator hoistway is opened and closed by a car door 2 provided in the car. The car door 2 includes a door panel 2a that opens and closes the car doorway 1, a door hanger 2b provided on the top of the door panel 2a, and a hanger roller 2c that is rotatably provided on the door hanger 2b. Further, a rail 3 is installed substantially horizontally on the side wall of the car above the car doorway 1. When the car door 2 is driven by a door driving device (not shown) provided in the car, As the hanger roller 2c rolls on the rail 3, its moving direction is guided.

  Further, the elevator car is provided with a door closing detection device for detecting that the car door 2 has reached a predetermined door closing position. 1 is provided at the upper part of the door hanger 2b and provided at the upper frame 5 above the car doorway 1 and the gate switch cam 4 interlocked with the opening / closing operation of the car door 2. The gate switch 6 is arranged so that the detector 6a is engaged with the gate switch cam 4 and its internal contact is closed when the door closing operation is completed. That is, when the door closing operation of the car door 2 is started, the gate switch cam 4 moves together with the car door 2 in the door closing direction along with the door closing operation of the car door 2. When the door closing operation of the car door 2 is finished, first, the end of the gate switch cam 4 is engaged with the detector 6a of the gate switch 6, and then the car door 2 further moves in the door closing direction. As a result, the detector 6a is guided by the guide surface of the gate switch cam 4 and pushed upward, and the internal contact of the gate switch 6 is closed. Note that the gate switch cam 4 and the gate switch 6 open the internal contact of the gate switch 6 when the car door 2 reaches a predetermined door closing position set immediately before the door closing operation is completed. It is arranged to switch from the closed state to the closed state. Then, when the internal contact of the gate switch 6 is closed, a contact close signal is output from the gate switch 6 to the determination means 7 described later.

  A safety shoe 8 is provided at the top end portion of the car door 2 (hereinafter simply referred to as “front end portion”) over the car entrance 1. The safety shoe 8 is arranged so that its tip end protrudes a predetermined distance from the tip end of the door panel 2a to the door stop side of the car, and by a link 9 provided rotatably on the landing side surface of the door panel 2a, The car door 2 is supported in a door opening / closing direction so that the car door 2 can move forward and backward. That is, when the car door 2 is closed, an obstacle comes into contact with the tip of the safety shoe 8 and the safety shoe 8 is biased in the door opening direction, so that the link 9 rotates counterclockwise in FIG. Thus, the safety shoe 8 moves in the door opening direction with respect to the door panel 2a.

  In addition, a shoe motion detection device that detects that the safety shoe 8 has moved a predetermined distance in the door opening direction with respect to the car door 2 is provided on the landing side surface of the door panel 2a. 1 includes a shoe switch 10 configured such that an internal contact opens and closes depending on the position of the detector 10a. The shoe switch 10 is arranged so that the detector 10a is always engaged with the link 9, and based on the rotation of the link 9 that occurs when the safety shoe 8 is urged in the door opening direction, Detect position. That is, as the safety shoe 8 is biased in the door opening direction, the link 9 rotates counterclockwise in FIG. 1 as described above. When the link 9 rotates and the detector 10a of the shoe switch 10 engaged with the link 9 is pushed in and the rotation amount of the link 9 exceeds a predetermined value, that is, the safety shoe 8 opens the door to the door panel 2a. When moving in the direction by a predetermined distance, the internal contact of the shoe switch 10 switches from a closed state to an open state. When the internal contact of the shoe switch 10 is opened, a contact open signal is output from the shoe switch 10 to the determination means 7 described later.

  The safety shoe 8 is provided with shoe operating means 11 for moving the safety shoe 8 to the detection position of the shoe operation detecting device when the door closing operation of the car door 2 is completed. Here, the shoe operating means 11 is provided on the safety shoe 8 and is disposed so as to be opposed to a mounting portion in which a screw hole is formed in the door opening and closing direction of the car door 2 and a door contact portion of the car. By being screwed into the screw hole of the mounting portion, there is a protruding portion whose protruding amount from the distal end portion of the safety shoe 8 is adjustable. 2 is a front view of part A of the elevator failure detection apparatus shown in FIG. 1, and FIG. 3 is a diagram showing shoe operating means according to Embodiment 1 of the present invention.

  2 and 3, the shoe operating means 11 according to the first embodiment is configured such that the tip screw portion 12a is inserted into a through hole 8a formed on the side surface of the door contact side that becomes the tip portion of the safety shoe 8, and the head portion 12b is inserted. A projecting bolt 12 projecting from the front end of the safety shoe 8 toward the door contact portion of the car at a predetermined distance, and a front end screw portion 12a of the projecting bolt 12 are screwed from both sides of the side surface of the safety shoe 8 on the door contact side. It comprises two mounting nuts 13 a and 13 b that fix the protruding bolt 12 to the tip of the safety shoe 8 by sandwiching the side surface. The mounting portion is composed of mounting nuts 13a and 13b, and the projecting portion is composed of a projecting bolt 12. The protruding amount of the protruding bolt 12 is such that the mounting nuts 13a and 13b are clamped so as to sandwich the side surface of the safety shoe 8 after the mounting bolts 13 are loosened and the protruding bolt 12 is disposed at an appropriate position. It is configured to be adjustable by tightening again.

  In the shoe operating means 11 having the above-described configuration, when the door closing operation of the car door 2 is finished, the head 12b of the protruding bolt 12 is arranged in the vertical frame of the door contact portion of the car disposed so as to face the safety shoe 8. 14 abuts. After the projecting bolt 12 contacts the vertical frame 14, the car door 2 further moves in the door closing direction, whereby the safety shoe 8 is urged in the door opening direction with respect to the car door 2, and the link 9 is shown in FIG. Rotate counterclockwise. Then, immediately before the door closing operation of the car door 2 is completed, the rotation amount of the link 9 reaches a predetermined value and the internal contact of the shoe switch 10 is opened. That is, it is detected by the shoe switch 10 that the movement amount of the safety shoe 8 has reached a predetermined value, and a contact open signal is output to the determination means 7. Thereafter, the door closing operation of the car door 2 ends.

  FIG. 4 is a timing chart for explaining the operation of each switch according to the first embodiment of the present invention, and shows the open / close state of the internal contact between the gate switch 6 and the shoe switch 10 when the car door 2 is opened and closed. It is a thing. In FIG. 4, when the car door 2 is open, the internal contact of the gate switch 6 is open, and the internal contact of the shoe switch 10 is closed. Here, when the door closing operation of the car door 2 is started, the car door 2 is driven by the door driving device and moves to the door contact portion side of the car. Then, when the door closing operation of the car door 2 is finished, first, the gate switch cam 4 is engaged with the detector 6a and the internal contact of the gate switch 6 is closed. A contact close signal is output. That is, the door closing detection device detects that the car door 2 has reached a predetermined door closing position.

  On the other hand, as the car door 2 moves in the door closing direction, as described above, the head 12b of the projecting bolt 12 provided on the safety shoe 8 abuts on the vertical frame 14, and the safety shoe 8 moves relative to the car door 2. It is energized in the door open direction. The protruding bolt 12 may contact the vertical frame 14 before or after the internal contact of the gate switch 6 is closed. Then, after a lapse of a predetermined time T after the internal contact of the gate switch 6 is closed, the movement amount of the safety shoe 8 reaches a predetermined value. That is, the rotation amount of the link 9 interlocked with the safety shoe 8 reaches a predetermined value, the internal contact of the shoe switch 10 is opened, and a contact open signal is output from the shoe switch 10 to the determination means 7.

  The projecting bolt 12 is arranged so that when the door closing operation of the car door 2 is finished, the internal contact of the shoe switch 10 is opened after a predetermined time T has elapsed after the internal contact of the gate switch 6 is closed. The protrusion amount is adjusted in advance. That is, the shoe operation means 11 detects the arrival of the car door 2 to the door closing position by the door closing detection device when the door closing operation of the car door 2 is finished, and then the safety shoe 8 by the shoe operation detection device. Are arranged so that movement of a predetermined distance is detected. In addition, since the protrusion amount of the protrusion bolt 12 is configured to be adjustable, the predetermined time T can be arbitrarily set.

  Next, the operation of the determination means 7 when the door closing operation of the car door 2 is completed will be described. FIG. 5 is a flowchart for explaining the operation of the determining means in the first embodiment of the present invention. In FIG. 5, when the door closing operation is started from the state where the car door 2 is opened (step S101), the determination means 7 first determines the open / closed state of the internal contact of the gate switch 6 (step S102). When a contact open signal is output from the shoe switch 10 in a state where it is determined that the internal contact of the gate switch 6 is open, a door (not shown) separate from the determination means 7 is used to open the door. It is determined that an obstacle has come into contact with the safety shoe 8 during the closing operation, and the car door 2 is inverted to prevent a user or the like from being caught. Further, when a contact closing signal is input from the gate switch 6 and it is determined that the internal contact of the gate switch 6 is in a closed state, the determination means 7 outputs a door closing signal to the control unit, The reversing operation of the car door 2 that is sandwiched to prevent accidents is stopped.

  Next, the determination means 7 determines the open / closed state of the internal contact of the shoe switch 10 (step S103). Here, a contact open signal is input from the shoe switch 10 within a predetermined time T1 (for example, a value obtained by adding a margin time ΔT to the predetermined time T set in advance), and the internal contact of the shoe switch 10 is opened. If it is determined, the determination means 7 determines that the internal contact of the shoe switch 10 operates normally (step S104), and ends the operation. Further, when the contact opening signal is not input from the shoe switch 10 within the predetermined time T1, the judging means 7 is connected even though the safety shoe 8 is moved to the detection position of the shoe action detecting device by the shoe action means 11. Since the internal contact of the shoe switch 10 remains closed, it is determined that the internal contact of the shoe switch 10 has an OFF failure (step S105).

  According to the first embodiment of the present invention, based on the open / closed state of the internal contact of the gate switch 6 and the open / closed state of the internal contact of the shoe switch 10, the internal contact of the shoe switch 10 is turned off with an inexpensive and simple configuration. A failure can be detected. Further, since the failure of the internal contact of the shoe switch 10 can be detected immediately before or after the door closing operation of the car door 2 ends or after the door closing operation, the safety shoe during the door closing operation can be detected. There is no fear of obstructing the operation when an obstacle comes into contact with 8, and malfunction can be reliably prevented.

  Further, since the shoe operating means 11 is composed of simple parts such as the projecting bolt 12 and mounting nuts 13a and 13b for fixing the projecting bolt 12 to the safety shoe 8, the failure detecting device itself can be constructed at low cost. it can. Further, since the protruding amount of the protruding bolt 12 can be adjusted by a simple operation, the predetermined time T at the time of OFF failure determination can be appropriately set for each installation location, and the determination accuracy of the determination means 7 can be improved. It is possible to increase. By arranging the shoe operating means 11 at a position that is not seen by the elevator user, there is no particular problem with respect to design.

  In addition, since the elevator failure detection apparatus according to the first embodiment has a simple configuration, it has a function of detecting a load state acting on the car door 2 during the door opening / closing operation and inverting the door opening / closing operation in an overload state. The renovation work added to the old elevator apparatus which is not provided can also be easily performed. That is, the car door 2 provided in the elevator car, the safety shoe 8 provided at the front end portion of the car door 2 so as to be movable back and forth in the door opening and closing direction, and the car door 2 are provided. When the door closing operation of the car door 2 ends, the safety shoe is provided with a shoe operation detecting device that detects that the safety shoe 8 has moved a predetermined distance in the door opening direction with respect to the car door 2. In order to move 8 to the detection position of the shoe motion detection device, a mounting portion in which a screw hole is formed in the door opening / closing direction of the car door 2 and a door contact portion of the car are disposed. The shoe operating means 11 having a protruding portion whose amount of protrusion from the distal end portion of the safety shoe 8 is adjustable by being screwed into the screw hole is newly installed on the safety shoe 8, and the cage door Based on the detection results of the door closing detection device and the shoe motion detection device that detect that 2 has reached a predetermined door closing position, a determination means 7 for determining an operation failure of the shoe motion detection device may be newly added. . In addition, since the shoe operation means 11 in Embodiment 1 can be easily attached by forming the through-hole 8a in the safety shoe 8 of the existing elevator apparatus, the repair work is easily performed in a short time. It is also possible.

  In addition, the door closing detection apparatus in Embodiment 1 of this invention may have what kind of structure, as long as it can detect that the car door 2 was closed. Therefore, another switch or a detection device may be newly installed or an existing detection device may be used. Further, a reporting unit for reporting the determination result by the determination unit 7 to the outside such as an elevator management company may be provided, or a recording unit for recording the determination result by the determination unit 7 may be provided. By having such a configuration, when a report indicating that an OFF failure has been determined is sent from the reporting unit, an elevator maintenance staff is dispatched immediately, or the maintenance staff confirms the recording information of the recording section to determine the cause of the malfunction. Judgment can be made accurately and maintainability can be further improved.

Embodiment 2. FIG.
Similarly to the first embodiment, the shoe operating means 11 is provided on the safety shoe 8 and is disposed so as to face the mounting portion in which screw holes are formed in the door opening / closing direction of the car door 2 and the door contact portion of the car. The screw portion is screwed into the screw hole of the mounting portion, thereby having a protruding portion whose protruding amount from the tip portion of the safety shoe 8 is adjustable. 6 is a view corresponding to FIG. 2 of an elevator failure detection apparatus according to Embodiment 2 of the present invention, and FIG. 7 is a diagram showing shoe operating means according to Embodiment 2 of the present invention.

  6 and 7, the shoe operating means 11 according to the second embodiment includes a mounting belt 15 fixed to a predetermined height of the safety shoe 8 by being wound around the safety shoe 8, and the mounting belt 15. A protruding amount absorbing portion 16 provided on the vertical frame 14 side, a mounting nut 17 provided on the end surface of the protruding amount absorbing portion 16 on the vertical frame 14 side and having a screw hole formed in the door opening / closing direction of the car door 2; The distal end screw portion is screwed into the screw hole of the mounting nut 17, and the head portion is constituted by a projecting bolt 18 projecting from the distal end portion of the safety shoe 8 toward the door stop portion side of the car at a predetermined distance. The mounting portion includes a mounting belt 15, a protruding amount absorbing portion 16 and a mounting nut 17, and the protruding portion includes a protruding bolt 18. The protruding amount of the protruding bolt 18 is configured to be adjustable by rotating the protruding bolt 18 in an arbitrary direction.

  By having such a configuration, when attaching the shoe operating means 11 to the safety shoe 8, there is no need to form the through hole 8a on the side surface of the safety shoe 8 on the door contact side, and in particular, the installation to the old type existing elevator apparatus is possible. It becomes easy. Needless to say, even if the attachment belt 15 is composed of a rubber band having contractility, the same effect can be obtained as long as the attachment belt 15 can be attached to an arbitrary height of the safety shoe 8. The other configurations and effects are the same as those of the first embodiment.

Embodiment 3 FIG.
As in the first and second embodiments, the shoe operating means 11 is provided in the safety shoe 8 and is opposed to the mounting portion in which screw holes are formed in the door opening / closing direction of the car door 2 and the door contact portion of the car. The protruding portion is arranged and the protruding amount from the distal end portion of the safety shoe 8 is adjustable by screwing the screw portion into the screw hole of the mounting portion. FIG. 8 is a view corresponding to FIG. 2 of an elevator failure detection apparatus according to Embodiment 3 of the present invention, and FIG. 9 is a diagram showing shoe operating means according to Embodiment 3 of the present invention.

  8 and 9, the shoe operating means 11 according to the third embodiment includes a clamp 19 fixed to the upper part of the safety shoe 8 by sandwiching the door-contact side surface of the safety shoe 8 from above the safety shoe 8. The support plate 20 erected on the upper surface of the clamp 19 and having a through hole (not shown) in the door opening / closing direction of the car door 2, and the tip screw portion are inserted into the through hole formed in the support plate 20. The head is protruded from the front end of the safety shoe 8 to the door stop side of the car at a predetermined distance, and the front end screw portion of the protrusion bolt 21 is screwed from both sides of the support plate 20 to narrow the support plate 20. By holding it, it is composed of two mounting nuts 22 a and 22 b for fixing the protruding bolt 21 to the support plate 20. The mounting portion is composed of a clamp 19, a support plate 20, and mounting bolts 22a and 22b, and the projecting portion is composed of a projecting bolt 21. The protruding amount of the protruding bolt 21 is determined by loosening the mounting nuts 22a and 22b and placing the protruding bolt 21 at an appropriate position, and then retightening the mounting nuts 22a and 22b so as to sandwich the support plate 20. It is configured to be adjustable.

  By having such a configuration, as in the second embodiment, it is not necessary to form the through-hole 8a on the side surface of the door contact side of the safety shoe 8 when attaching the shoe operating means 11, and particularly to the old existing elevator apparatus. Is easy to install. Needless to say, even if the clamp 19 is configured to clamp the door-contact side surface of the safety shoe 8 by fastening means such as bolts, the same effect can be obtained as long as it can be attached to the top of the safety shoe 8. . The other configurations and effects are the same as those of the first embodiment.

Embodiment 4 FIG.
The shoe operating means 11 is provided on the car and has an attachment part whose attachment position can be adjusted in the door opening / closing direction of the car door 2, and an opposing part provided on the attachment part and arranged to face the tip of the safety shoe 8. Part. FIG. 10 is a plan view of a main part of an elevator failure detection apparatus according to Embodiment 4 of the present invention, and FIG. 11 is a diagram showing shoe operating means according to Embodiment 4 of the present invention.

  10 and 11, the shoe operating means 11 according to the fourth embodiment is substantially U-shaped, and is applied to the upper edge of a part of the vertical frame 14 arranged in parallel to the car door 2 from above. The cage is arranged such that the mounting plate 23 placed so as to be covered and the tip screw portion are inserted into a through hole (not shown) formed in the mounting plate 23 and a part thereof faces the tip portion of the safety shoe 8. A projecting bolt 24 disposed at a predetermined distance from the door-contacting portion, and a screw threaded from both sides of one side portion of the mounting plate 23 to sandwich the one side portion of the projecting bolt 24. , And two mounting nuts 25 a and 25 b for fixing the protruding bolt 24 to the mounting plate 23. The shoe operating means 11 is fixed to a part of the vertical frame 14 by sandwiching a part of the vertical frame 14 by the other side part of the mounting plate 23 and the tip screw part of the protruding bolt 24. The mounting portion is composed of a mounting plate 23 and mounting nuts 25a and 25b, and the facing portion is composed of a protruding bolt 24. Further, the mounting position of the shoe operating means 11 is such that the mounting nuts 25a and 25b are loosened and the mounting plate 23 is slid to an appropriate position, and then a part of the upper edge of the vertical frame 14 is clamped. By retightening 25a and 25b, it is configured to be adjustable.

  In the shoe operating means 11 having the above configuration, when the door closing operation of the car door 2 is finished, the tip of the safety shoe 8 comes into contact with the protruding bolt 24 from the side. After the safety shoe 8 comes into contact with the protruding bolt 24, the car door 2 further moves in the door closing direction, whereby the safety shoe 8 is biased in the door opening direction with respect to the car door 2, and the link 9 is shown in FIG. Rotate counterclockwise. Then, immediately before the door closing operation of the car door 2 is completed, the rotation amount of the link 9 reaches a predetermined value and the internal contact of the shoe switch 10 is opened. That is, it is detected by the shoe switch 10 that the movement amount of the safety shoe 8 has reached a predetermined value, and a contact open signal is output to the determination means 7. Thereafter, the door closing operation of the car door 2 ends.

  According to the fourth embodiment of the present invention, even when it is difficult to attach the shoe operating means 11 to the safety shoe 8 for some reason, the failure detection device can be easily installed. Moreover, the attachment position of the shoe operation means 11 can be easily adjusted in the door opening / closing direction of the car door 2, and the determination system of the determination means 7 can be enhanced.

  Further, since the elevator failure detection apparatus according to the fourth embodiment is easy to install and the shoe operation means 11 is installed, the repair work added to the old elevator apparatus can be easily performed. That is, the car door 2 provided in the elevator car, the safety shoe 8 provided at the front end portion of the car door 2 so as to be movable back and forth in the door opening and closing direction, and the car door 2 are provided. When the door closing operation of the car door 2 ends, the safety shoe is provided with a shoe operation detecting device that detects that the safety shoe 8 has moved a predetermined distance in the door opening direction with respect to the car door 2. In order to move 8 to the detection position of the shoe motion detection device, the mounting position is adjustable in the door opening and closing direction of the car door 2, and the mounting portion is provided, and is disposed to face the tip of the safety shoe 8. Of the door closing detecting device and the shoe motion detecting device for newly installing the shoe operating means 11 having a facing portion on the car and detecting that the car door 2 has reached a predetermined door closing position. Based on the output result may be newly added a determining means 7 the operation failure of the shoe operation detecting apparatus. The rest of the configuration and effects are the same as those of the first embodiment.

Embodiment 5 FIG.
The shoe operating means 11 is provided at the door stop portion of the car, and is disposed to face the mounting portion in which the screw hole is formed in the door opening / closing direction of the car door 2 and the front end portion of the safety shoe 8, and the screw portion is the above-mentioned By being screwed into the screw hole of the mounting portion, there is a protruding portion whose amount of protrusion from the door stop portion of the car can be adjusted. FIG. 12 is a plan view of an essential part of an elevator failure detection apparatus according to Embodiment 5 of the present invention, and FIG. 13 is a diagram showing shoe operating means according to Embodiment 5 of the present invention.

  12 and 13, the shoe operating means 11 in the fifth embodiment is substantially U-shaped, and the upper edge of the vertical frame 14 that faces the safety shoe 8 is sandwiched from above, so that the door contact portion of the car A clamp 26 fixed to the upper portion of the clamp 26, a protruding amount absorbing portion 27 provided on the safety shoe 8 side of the clamp 26, and a safety shoe 8 side end surface of the protruding amount absorbing portion 27. The mounting nut 28 having a screw hole formed in the door opening and closing direction, and the tip screw portion are screwed into the screw hole of the mounting nut 28, and the head faces the tip of the safety shoe 8 at the door-to-door portion of the car. And a projecting bolt 29 projecting to the safety shoe 8 side by a predetermined distance. The mounting portion includes a clamp 26, a protruding amount absorbing portion 27 and a mounting nut 28, and the protruding portion includes a protruding bolt 29. The protruding amount of the protruding bolt 29 is configured to be adjustable by rotating the protruding bolt 29 in an arbitrary direction.

  In the shoe operating means 11 having the above configuration, when the door closing operation of the car door 2 is finished, the tip of the safety shoe 8 comes into contact with the head of the protruding bolt 29. After the safety shoe 8 abuts against the protruding bolt 29, the car door 2 further moves in the door closing direction, whereby the safety shoe 8 is biased in the door opening direction with respect to the car door 2, and the link 9 is shown in FIG. Rotate counterclockwise. Then, immediately before the door closing operation of the car door 2 is completed, the rotation amount of the link 9 reaches a predetermined value and the internal contact of the shoe switch 10 is opened. That is, it is detected by the shoe switch 10 that the movement amount of the safety shoe 8 has reached a predetermined value, and a contact open signal is output to the determination means 7. Thereafter, the door closing operation of the car door 2 ends.

  According to the fifth embodiment of the present invention, as in the fourth embodiment, even when it is difficult to attach the shoe operating means 11 to the safety shoe 8, the failure detection device can be easily installed. . Moreover, since the protrusion amount of the protrusion bolt 29 can be adjusted by a simple operation, the determination accuracy of the determination means 7 can be increased.

  Further, since the elevator failure detection apparatus according to the fifth embodiment is easy to install and the shoe operation means 11 is installed, the repair work added to the old elevator apparatus can be easily performed. That is, the car door 2 provided in the elevator car, the safety shoe 8 provided at the front end portion of the car door 2 so as to be movable back and forth in the door opening and closing direction, and the car door 2 are provided. When the door closing operation of the car door 2 ends, the safety shoe is provided with a shoe operation detecting device that detects that the safety shoe 8 has moved a predetermined distance in the door opening direction with respect to the car door 2. In order to move 8 to the detection position of the shoe motion detection device, a mounting portion in which a screw hole is formed in the door opening / closing direction of the car door 2 and a front end portion of the safety shoe 8 are arranged opposite to each other, and the screw portion is the mounting portion. The shoe operating means 11 having a protruding portion whose amount of protrusion from the door stop portion is adjustable by being screwed into the screw hole is newly installed in the door stopper portion of the car, and the car door 2 is Based on the detection result of the constant of the output door closing detecting that reaching the door-closing position device and the shoe operation detecting device may be newly added a determining means 7 the operation failure of the shoe operation detecting apparatus. Other than that, the configuration and effects similar to those of the first embodiment are obtained.

1 is a front view of an elevator failure detection apparatus according to Embodiment 1 of the present invention. It is the A section front view of the failure detection apparatus of the elevator shown in FIG. It is a figure which shows the shoe operation | movement means in Embodiment 1 of this invention. It is a timing chart explaining operation | movement of each switch in Embodiment 1 of this invention. It is a flowchart explaining operation | movement of the determination means in Embodiment 1 of this invention. It is the FIG. 2 equivalent view of the failure detection apparatus of the elevator in Embodiment 2 of this invention. It is a figure which shows the shoe operation | movement means in Embodiment 2 of this invention. It is the FIG. 2 equivalent view of the failure detection apparatus of the elevator in Embodiment 3 of this invention. It is a figure which shows the shoe operation | movement means in Embodiment 3 of this invention. It is a principal part top view of the failure detection apparatus of the elevator in Embodiment 4 of this invention. It is a figure which shows the shoe operation | movement means in Embodiment 4 of this invention. It is a principal part top view of the failure detection apparatus of the elevator in Embodiment 5 of this invention. It is a figure which shows the shoe operation | movement means in Embodiment 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car doorway 2 Car door 2a Door panel 2b Door hanger 2c Hanger roller 3 Rail 4 Gate switch cam 5 Upper frame 6 Gate switch 6a, 10a Detector 7 Judgment means 8 Safety shoe 8a Through-hole 9 Link 10 Shoe switch 11 Shoe operation means 12, 18 , 21, 24, 29 Protruding bolt 12a Tip screw portion 12b Head 13a, 13b, 17, 22a, 22b, 25a, 25b, 28 Mounting nut 14 Vertical frame 15 Mounting belt 16, 27 Protruding amount absorbing portion 19, 26 20 Support plate 23 Mounting plate

Claims (8)

A car door provided in the elevator car,
A door closing detection device for detecting that the car door has reached a predetermined door closing position;
A safety shoe provided at the front end of the car door so as to be movable forward and backward in the door opening and closing direction of the car door;
A shoe operation detecting device provided on the car door and detecting that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door;
Shoe operating means, provided on the safety shoe, for moving the safety shoe to a detection position of the shoe operation detecting device when the door closing operation of the car door is completed;
Determination means for determining an operation failure of the shoe motion detection device based on detection results of the door closing detection device and the shoe motion detection device;
With
The shoe operating means includes
A mounting portion provided on the safety shoe, wherein a screw hole is formed in a door opening / closing direction of the car door;
A projecting portion that is disposed to face the door-to-door portion of the car, and a screw portion is screwed into the screw hole of the mounting portion, so that a projecting amount from the tip portion of the safety shoe is adjustable;
An elevator failure detection apparatus comprising: A car door provided in the elevator car,
A door closing detection device for detecting that the car door has reached a predetermined door closing position;
A safety shoe provided at the front end of the car door so as to be movable forward and backward in the door opening and closing direction of the car door;
A shoe operation detecting device provided on the car door and detecting that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door;
Shoe operating means provided at a door stop portion of the car and moving the safety shoe to a detection position of the shoe operation detecting device when the door closing operation of the car door is completed;
Determination means for determining an operation failure of the shoe motion detection device based on detection results of the door closing detection device and the shoe motion detection device;
With
The shoe operating means includes
An attachment portion provided at a door-to-door portion of the car, wherein a screw hole is formed in a door opening / closing direction of the car door;
A protruding portion that is disposed to face the front end portion of the safety shoe, and a screw portion is screwed into the screw hole of the mounting portion, so that a protruding amount from the door stop portion is adjustable,
An elevator failure detection apparatus comprising: A car door provided in the elevator car,
A door closing detection device for detecting that the car door has reached a predetermined door closing position;
A safety shoe provided at the front end of the car door so as to be movable forward and backward in the door opening and closing direction of the car door;
A shoe operation detecting device provided on the car door and detecting that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door;
Shoe operating means provided at a door stop portion of the car and moving the safety shoe to a detection position of the shoe operation detecting device when the door closing operation of the car door is completed;
Determination means for determining an operation failure of the shoe motion detection device based on detection results of the door closing detection device and the shoe motion detection device;
With
The shoe operating means includes
A mounting portion provided on the car, the mounting position of which can be adjusted in the door opening and closing direction of the car door;
A facing portion provided in the mounting portion and disposed to face the tip of the safety shoe;
An elevator failure detection apparatus comprising: A car door provided in the elevator car,
A safety shoe provided at the front end of the car door so as to be movable forward and backward in the door opening and closing direction of the car door;
A shoe operation detecting device provided on the car door and detecting that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door;
In the existing elevator device equipped with
In order to move the safety shoe to the detection position of the shoe motion detecting device when the door closing operation of the car door is completed, an attachment portion having a screw hole formed in the door opening / closing direction of the car door, A shoe operating means that is disposed to face the door stop portion, and has a protruding portion in which a protruding amount from the tip end portion of the safety shoe can be adjusted by screwing a screw portion into the screw hole of the mounting portion. To the safety shoe,
Adding a door closing detection device for detecting that the car door has reached a predetermined door closing position and a determination means for determining an operation failure of the shoe motion detection device based on a detection result of the shoe motion detection device. A method of repairing an elevator apparatus characterized by the above. A car door provided in the elevator car,
A safety shoe provided at the front end of the car door so as to be movable forward and backward in the door opening and closing direction of the car door;
A shoe operation detecting device provided on the car door and detecting that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door;
In the existing elevator device equipped with
An attachment portion having a screw hole formed in the door opening / closing direction of the car door, and the safety shoe for moving the safety shoe to the detection position of the shoe motion detecting device when the door closing operation of the car door is completed. A shoe operating means having a projecting portion that is disposed so as to oppose the front end portion of the mounting portion and has a screw portion that is screwed into the screw hole of the mounting portion, the projecting amount of the projecting portion being adjustable. Newly installed in the door-to-door part of the cage,
Adding a door closing detection device for detecting that the car door has reached a predetermined door closing position and a determination means for determining an operation failure of the shoe motion detection device based on a detection result of the shoe motion detection device. A method of repairing an elevator apparatus characterized by the above. A car door provided in the elevator car,
A safety shoe provided at the front end of the car door so as to be movable forward and backward in the door opening and closing direction of the car door;
A shoe operation detecting device provided on the car door and detecting that the safety shoe has moved a predetermined distance in the door opening direction with respect to the car door;
In the existing elevator device equipped with
A mounting portion whose mounting position is adjustable in the door opening / closing direction of the car door, in order to move the safety shoe to the detection position of the shoe motion detection device when the door closing operation of the car door is completed, and the mounting portion A shoe operating means provided on the car and having a facing portion disposed to face the tip portion of the safety shoe.
Adding a door closing detection device for detecting that the car door has reached a predetermined door closing position and a determination means for determining an operation failure of the shoe motion detection device based on a detection result of the shoe motion detection device. A method of repairing an elevator apparatus characterized by the above.   When the door closing operation of the car door is completed, the shoe operation means detects the arrival of the car door to the door closing position by the door closing detection device and then moves the safety shoe by a predetermined distance by the shoe operation detection device. 7. The elevator failure detection device or the elevator device modification according to claim 1, wherein the protrusion amount of the protrusion or the attachment position of the attachment portion is adjusted so that the Method.   When the door closing operation of the car door is completed, the judging means detects the safety shoe by the shoe operation detecting device within a predetermined time after the door closing detecting device detects the arrival of the car door to the door closing position. The elevator failure detection device or the elevator device repair method according to any one of claims 1 to 7, wherein an operation failure of the shoe motion detection device is determined when a movement of a predetermined distance is not detected. .

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